search for: idt

Dear members, I am extracting a pdf table by the following code: > library(tabulizer) > IDT <- extract_tables("https://www.canmoney.in/pdf/INTRADAYLEVERAGE-20220531-latest.pdf",output = "data.frame") It returns 4 different data frames which I want to combine them and make one data frame. But when I run this: > rbind(IDT[[1]],IDT[[2]],IDT[[3]],IDT[[4]]) Error i...

...columns? Omit some columns? Add missing columns filled with NA? On April 9, 2023 10:22:32 AM PDT, akshay kulkarni <akshay_e4 at hotmail.com> wrote: >Dear members, > I am extracting a pdf table by the following code: > >> library(tabulizer) >> IDT <- extract_tables("https://www.canmoney.in/pdf/INTRADAYLEVERAGE-20220531-latest.pdf",output = "data.frame") > >It returns 4 different data frames which I want to combine them and make one data frame. But when I run this: > >> rbind(IDT[[1]],IDT[[2]],IDT[[3]],ID...

From: Joerg Roedel <jroedel at suse.de> With SEV-ES, exception handling is needed very early, even before the kernel has cleared the bss segment. In order to prevent clearing the currently used IDT, move the IDT to the data segment. Signed-off-by: Joerg Roedel <jroedel at suse.de> --- arch/x86/kernel/idt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/idt.c b/arch/x86/kernel/idt.c index 87ef69a72c52..7f81c1294847 100644 --- a/arch/x86/kernel/idt.c...

From: Joerg Roedel <jroedel at suse.de> With SEV-ES, exception handling is needed very early, even before the kernel has cleared the bss segment. In order to prevent clearing the currently used IDT, move the IDT to the data segment. Signed-off-by: Joerg Roedel <jroedel at suse.de> --- arch/x86/kernel/idt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/idt.c b/arch/x86/kernel/idt.c index 0db21206f2f3..b920f2352df5 100644 --- a/arch/x86/kernel/idt.c...

From: Joerg Roedel <jroedel at suse.de> Move these two functions from kernel/idt.c to include/asm/desc.h: * init_idt_data() * idt_init_desc() These functions are needed to setup IDT entries very early and need to be called from head64.c. To be usable this early these functions need to be compiled without instrumentation and the stack-protector feature. These features need t...

Dear Jeff, Thanks for your reply. I have the following: > colnames(IDT[[4]]) [1] "X168" "TATA.MOTORS.LIMITED" "TATAMOTORS" "X4" THe above has to be the first row of IDT[[4]]. The first row is getting parsed as the column name. How do you make that the first row of IDT[[4]]? Thanking you, Yours sincerely...

This makes the IDT unconditionally read-only. This primarily removes the IDT from being a target for arbitrary memory write attacks. It has an added benefit of also not leaking (via the "sidt" instruction) the kernel base offset, if it has been relocated. Signed-off-by: Kees Cook <keescook at chromium.o...

This makes the IDT unconditionally read-only. This primarily removes the IDT from being a target for arbitrary memory write attacks. It has an added benefit of also not leaking (via the "sidt" instruction) the kernel base offset, if it has been relocated. Signed-off-by: Kees Cook <keescook at chromium.o...

...28.2 Y6 5.9 18.6 37.4 14.5 0.3 36.9 Y7 8.0 16.1 88.6 24.1 0.1 34.6 Y8 13.6 21.1 56.3 19.0 0.7 33.3 I wish to import the file into R and make certain computations, like intercorrelation matrix. I tried the following syntax: # Inputting the data file (saved in text format) df="trial.txt" idt=read.table(df,header=T, sep="\t") idt # To generate intercorrelatio matrix r = cor(idt) r=round(r, 4) r The seems to have been read, but further computations not made, with the following output: > # Inputting the data file (saved in text format) > df="trial.txt" > idt...

...eb 11, 2020 at 5:53 AM Joerg Roedel <joro at 8bytes.org> wrote: > > From: Joerg Roedel <jroedel at suse.de> > > With SEV-ES, exception handling is needed very early, even before the > kernel has cleared the bss segment. In order to prevent clearing the > currently used IDT, move the IDT to the data segment. Ugh. At the very least this needs a comment in the code. I had a patch to fix the kernel ELF loader to clear BSS, which would fix this problem once and for all, but it didn't work due to the messy way that the decompressor handles memory. I never got aroun...

...eb 11, 2020 at 5:53 AM Joerg Roedel <joro at 8bytes.org> wrote: > > From: Joerg Roedel <jroedel at suse.de> > > With SEV-ES, exception handling is needed very early, even before the > kernel has cleared the bss segment. In order to prevent clearing the > currently used IDT, move the IDT to the data segment. Ugh. At the very least this needs a comment in the code. I had a patch to fix the kernel ELF loader to clear BSS, which would fix this problem once and for all, but it didn't work due to the messy way that the decompressor handles memory. I never got aroun...

From: Joerg Roedel <jroedel at suse.de> Load the IDT right after switching to virtual addresses in head_64.S so that the kernel can handle #VC exceptions. Signed-off-by: Joerg Roedel <jroedel at suse.de> Link: https://lore.kernel.org/r/20200724160336.5435-36-joro at 8bytes.org --- arch/x86/include/asm/setup.h | 3 +++ arch/x86/kernel/head64....

...Add missing columns filled with NA? > >On April 9, 2023 10:22:32 AM PDT, akshay kulkarni <akshay_e4 at hotmail.com> wrote: >>Dear members, >> I am extracting a pdf table by the following code: >> >>> library(tabulizer) >>> IDT <- extract_tables("https://www.canmoney.in/pdf/INTRADAYLEVERAGE-20220531-latest.pdf",output = "data.frame") >> >>It returns 4 different data frames which I want to combine them and make one data frame. But when I run this: >> >>> rbind(IDT[[1]],IDT[...

...ytes.org> wrote: >>> >>> From: Joerg Roedel <jroedel at suse.de> >>> >>> With SEV-ES, exception handling is needed very early, even before the >>> kernel has cleared the bss segment. In order to prevent clearing the >>> currently used IDT, move the IDT to the data segment. >> >> Ugh. At the very least this needs a comment in the code. > > Yes, right, added a comment for that. > >> I had a patch to fix the kernel ELF loader to clear BSS, which would >> fix this problem once and for all, but it did...

...ytes.org> wrote: >>> >>> From: Joerg Roedel <jroedel at suse.de> >>> >>> With SEV-ES, exception handling is needed very early, even before the >>> kernel has cleared the bss segment. In order to prevent clearing the >>> currently used IDT, move the IDT to the data segment. >> >> Ugh. At the very least this needs a comment in the code. > > Yes, right, added a comment for that. > >> I had a patch to fix the kernel ELF loader to clear BSS, which would >> fix this problem once and for all, but it did...

Make a copy of the IDT (as seen via the "sidt" instruction) read-only. This primarily removes the IDT from being a target for arbitrary memory write attacks, and has the added benefit of also not leaking the kernel base offset, if it has been relocated. We already did this on vendor == Intel and family == 5 be...

Make a copy of the IDT (as seen via the "sidt" instruction) read-only. This primarily removes the IDT from being a target for arbitrary memory write attacks, and has the added benefit of also not leaking the kernel base offset, if it has been relocated. We already did this on vendor == Intel and family == 5 be...

...del at suse.de> Link: https://lore.kernel.org/r/20200724160336.5435-42-joro at 8bytes.org --- arch/x86/include/asm/setup.h | 1 + arch/x86/include/asm/sev-es.h | 3 +++ arch/x86/kernel/head64.c | 1 + arch/x86/kernel/head_64.S | 34 +++++++++++++++++++++++++++++++++ arch/x86/kernel/idt.c | 36 +++++++++++++++++++++++++++++++++++ 5 files changed, 75 insertions(+) diff --git a/arch/x86/include/asm/setup.h b/arch/x86/include/asm/setup.h index cafae86813ae..0ce6453c9272 100644 --- a/arch/x86/include/asm/setup.h +++ b/arch/x86/include/asm/setup.h @@ -53,6 +53,7 @@ extern unsi...

...oedel <joro at 8bytes.org> wrote: > > > > From: Joerg Roedel <jroedel at suse.de> > > > > With SEV-ES, exception handling is needed very early, even before the > > kernel has cleared the bss segment. In order to prevent clearing the > > currently used IDT, move the IDT to the data segment. > > Ugh. At the very least this needs a comment in the code. Yes, right, added a comment for that. > I had a patch to fix the kernel ELF loader to clear BSS, which would > fix this problem once and for all, but it didn't work due to the messy &...

...t;>>> >>>> From: Joerg Roedel <jroedel at suse.de> >>>> >>>> With SEV-ES, exception handling is needed very early, even before the >>>> kernel has cleared the bss segment. In order to prevent clearing the >>>> currently used IDT, move the IDT to the data segment. >>> >>> Ugh. At the very least this needs a comment in the code. >> >> Yes, right, added a comment for that. >> >>> I had a patch to fix the kernel ELF loader to clear BSS, which would >>> fix this problem onc...