kernel.git - Linux vanilla kernels for Fedora – https://fedoraproject.org/wiki/Kernel_Vanilla

path: root/configs/fedora/generic/CONFIG_VIDEO_OV8856

	Commit message (Expand)	Author	Age	Files	Lines
*	Linux v5.8.4 rebase	Justin M. Forbes	2020-08-26	1	-0/+24

or not xsave is supported early in the boot. So now when attempting to boot a RHEL6 guest on RHEL5.0 or RHEL5.1 an early crash will occur. This patch is quite obviously an undesirable hack. The real fix for this problem should be in the HV, and is, in later HVs. However, to support running on old HVs, RHEL6 can take this small change. No impact will occur for running on any RHEL HV (not even RHEL 5.5 supports xsave). There is only potential for guest performance loss on upstream Xen. --- arch/x86/xen/enlighten.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c index 52f8e19..6db3d67 100644 --- a/arch/x86/xen/enlighten.c +++ b/arch/x86/xen/enlighten.c @@ -802,6 +802,7 @@ static void xen_write_cr4(unsigned long cr4) { cr4 &= ~X86_CR4_PGE; cr4 &= ~X86_CR4_PSE; + cr4 &= ~X86_CR4_OSXSAVE; native_write_cr4(cr4); } -- 1.6.6.1